Geobge b



(No Model.)

G. B. BROOK. Furnace for Steam Generators;

No. 239,028. Patented March 22,1881.

N- PETERS. FHOTO LITMOGRAPHER WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

GEORGE B. BROGK, OF BRYN SYFI, SWANSEA, WALES.

FURNACE FOR STEAM-GENERATORS.

SPECIFICATION forming part of Letters Patent No. 239,028, dated March 22, 1881. Application filed July 6, 1880. (No model.) Patented in England December 2, 1879.

To all whom it may concern:

subject of the Queen of Great Britain, residing at Bryn Syfi, Swansea, in the county of Glamorgan, Wales, have in vented certain new and useful Improvements in Furnaces for Steam- Generators, of which the following is a specification.

This invention relates to that class of furnaces in which steam is introduced into the furnace to aid combustion.

The invention consists in the arrangement, beneath an inclined bridge which springs from the furnace-wall or water-leg, of a tubular stay to form a steam-inlet, the said stay having its bore, or the inner portion of it, arranged at an incline corresponding substantially with that of the bridge, whereby the jet is inclined upward and forward immediately beneath the bridge. I

Thedrawing which serves to illustrate my invention is a sectional elevation of a part of the furnace and generator, taken in a plane parallel to the axis of the generator.

9 is an inclined bridge which springs from the water-leg at the back of the furnace d and extends forward at an upward incline.

b is a steam-pipe leading from the generator to the back of the furnace, where it taps the outer end of a tubular stay, 0, arranged to span the water-space in the leg, and to open inside just below the bridge. This stay extends horizontally across from one wall of the water-leg to the other, and receives the steampipe in a horizontal bore or socket; but the inner portion of the bore inclines upward at about the same angle as the bridge, as shown. This construction enables me to employ a stay set in the usual and most convenient manner namely, in a position at right angles to the walls in which it is fixed, and at the same time to direct the incoming jet of steam upward, as

shown.

I am aware that it is not new to employ hollow or tubular stays for admitting steam to furnaces; but I am not aware that-stays orinlets of this kind, and arranged in this manner, have ever before been employed.

I am also aware that hollow or tubular inclined bridges arranged to receive air at the back of the furnace and discharge it at the upper edge of the bridge have'been employed but these are entirely different from my invention, and are intended to effect a different result.

I claim The combination, with the furnace, of the inclined bridge g, the stay 0, set in the waterleg of the furnace, as shown, and provided with an inclined bore arranged to open under 

